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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    
</body>
<script>
    var borderWidth = 1;
    var tableWidth = 400;
    var tableHeight = 400;
    document.write("<table border='"+borderWidth+"' height='"+tableHeight+"' width='"+tableWidth+"'>")
    for(var i=0;i<4;i++){
        document.write("<tr>");
        for(var j=0;j<4;j++){
            document.write("<td>&nbsp</td>");//也可以拆开写
        }
        document.write("</tr>");
    }
    document.write('</table>');

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